全文获取类型
收费全文 | 92772篇 |
免费 | 2796篇 |
国内免费 | 5篇 |
专业分类
管理学 | 12577篇 |
民族学 | 563篇 |
人才学 | 25篇 |
人口学 | 7389篇 |
丛书文集 | 534篇 |
教育普及 | 2篇 |
理论方法论 | 9488篇 |
现状及发展 | 1篇 |
综合类 | 2218篇 |
社会学 | 43801篇 |
统计学 | 18975篇 |
出版年
2023年 | 504篇 |
2021年 | 569篇 |
2020年 | 1504篇 |
2019年 | 2203篇 |
2018年 | 2149篇 |
2017年 | 3188篇 |
2016年 | 2413篇 |
2015年 | 2035篇 |
2014年 | 2626篇 |
2013年 | 18824篇 |
2012年 | 2518篇 |
2011年 | 2314篇 |
2010年 | 2061篇 |
2009年 | 2237篇 |
2008年 | 2170篇 |
2007年 | 1971篇 |
2006年 | 2161篇 |
2005年 | 2371篇 |
2004年 | 2235篇 |
2003年 | 1946篇 |
2002年 | 2051篇 |
2001年 | 2073篇 |
2000年 | 1846篇 |
1999年 | 1733篇 |
1998年 | 1534篇 |
1997年 | 1384篇 |
1996年 | 1330篇 |
1995年 | 1365篇 |
1994年 | 1350篇 |
1993年 | 1310篇 |
1992年 | 1340篇 |
1991年 | 1266篇 |
1990年 | 1253篇 |
1989年 | 1088篇 |
1988年 | 1169篇 |
1987年 | 1043篇 |
1986年 | 966篇 |
1985年 | 1113篇 |
1984年 | 1171篇 |
1983年 | 1052篇 |
1982年 | 966篇 |
1981年 | 882篇 |
1980年 | 843篇 |
1979年 | 895篇 |
1978年 | 803篇 |
1977年 | 727篇 |
1976年 | 676篇 |
1975年 | 654篇 |
1974年 | 536篇 |
1973年 | 456篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
This article studies design selection for generalized linear models (GLMs) using the quantile dispersion graphs (QDGs) approach in the presence of misspecification in the link and/or linear predictor. The uncertainty in the linear predictor is represented by a unknown function and estimated using kriging. For addressing misspecified link functions, a generalized family of link functions is used. Numerical examples are shown to illustrate the proposed methodology. 相似文献
52.
53.
54.
In this article, we explore views on an age-friendly space in the Netherlands by analysing the responses of older individuals (N = 54) in focus groups and by examining the perspectives around an age-friendly zone in the Netherlands, Parkstad Limburg. We found that a central issue in the wishes for living at a later age are adjustments to envisioned physical limitations that come with the ageing process; this includes adjustments to ensure safety, accessibility and mobility, in order to facilitate older individuals' efforts to stay engaged with the world around them. In their wishes, the older participants constructed ideal dwelling places that closely resembled a senior home, but at the same time they rejected wishing to live in a place that was identified as a senior home. We explain this paradox by the representation of such a space as being for old people, i.e. needy older individuals, which was not how the older participants wished to be identified. We conclude that the conception of age-friendly environments will have to face the difficult challenge of overcoming the association with old age, while simultaneously taking into account adjustments that signify and relate to the ageing process and that seem inescapably tied to oldness. 相似文献
55.
在经济下行压力加大、资本市场进一步开放的新形势下,厘清审计市场交易——监管机制,完善审计服务市场尤为必要。借由2010 年审计定价管制政策失效的自然实验,本文通过嵌入双边随机边界模型,得到审计双方的定价交易剩余指标,运用双重差分模型解析价格管制与交易定价的作用机制。研究发现,定价管制失效的原因不在于规制俘获,而在于价格管制与当前的市场效率不匹配。下限管制尽管能够提高审计师剩余,但同时会放大交易定价风险,增加剩余的错配,扰乱交易秩序。上限管制则进一步固化市场的低价竞争。进一步研究发现审计师剩余与盈余质量显著相关,2014年的放开定价管制政策提高了审计师剩余。研究厘清了审计市场交易机制,有利于未来研究审计交易机制的微观影响及与盈余质量的关联,为在新时代把握审计市场交易——监管规律、培育自发良性交易的审计市场提供有益借鉴。 相似文献
56.
We find “green” labels increase residential property values by an average of 5%. This premium varies by label stringency and across market segments. Builders respond to the stringency of labels by strategically incorporating green features to achieve higher ratings. This strategy seems reasonable as there is no market premium for green features that lead to scores between label rating cutoff values. These results raise important questions as to how green label policies should be designed in order to foster the supply of green features. Gradations of green attributes are influential, particularly for highly rated homes. The most stringent labels have the greatest role at the high price end of the market. (JEL Q20, Q40, R31) 相似文献
57.
Economic theory establishes that pension privatization weakens the link between old and young and so reduces the incentive to invest in public education in an economy with lower return rate of capital than growth rate of wage. However, empirical studies of the link change are few. In this paper, we investigate the effects of pension privatization and the central government’s subsidy to individual accounts on public education spending in a three-period overlapping generation model. And then, we take contemporary pension reforms in a number of Chinese provinces as offering natural experiment conditions. Using a difference-in-difference framework and 282 municipal districts panel data over years 1998–2009, we test the pension-education theoretical link change. Both our theoretical and empirical results confirm that pension privatization is adversely associated with local public spending on education in China. Private pension subsidies, moreover, magnify this effect. Our study supports the theoretical assertion and selective empirical findings of a negative intergenerational effect of pension privatization. 相似文献
58.
59.
60.
Adrian D. Van Breda 《Journal of youth studies》2015,18(3):322-337
The journey out of care and towards independent living is a challenge for many care-leavers. There has been little research into the social processes involved in this care-leaving journey. This paper presents the results of a grounded theory investigation into the care-leaving journeys of nine young men who had, several years previously, been in the care of Girls & Boys Town in South Africa. Working from a resilience perspective, with an ecological emphasis, four central social processes emerged that together explain the care-leaving experiences of the participants. These processes are striving for authentic belonging; networking people for goal attainment; contextualised responsiveness and building hopeful and tenacious self-confidence. These four processes are located within contextual boundaries and at the social environmental interface. The paper presents these processes in detail, drawing on selected narratives of the participants and integrated with additional theory. It is hoped that this paper may contribute to theory building concerning care-leaving processes and enhance youth care practices for youth in care and leaving care. 相似文献